Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01e3a83d445b7bca622d7c02c83a641da3d9d8dff5e8381ebc00e10614c3fac9' 
  AND token = 'RoWuWiKZwY9ncG0traC0Q4J7DftJ3ePUGxnHJrXCds8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}